SFH 3400-2/3-Z

Series:	*
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Collector Emitter Breakdown (Max):	20V
Current - Collector (Ic) (Max):	50mA
Current - Dark (Id) (Max):	100nA
Wavelength:	850nm
Viewing Angle:	120°
Power - Max:	120mW
Mounting Type:	Surface Mount
Orientation:	Top View
Operating Temperature:	-40°C ~ 100°C (TA)
Package / Case:	3-SMD, Gull Wing

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Optical Sensors - Phototransistors

Optical sensors are components used to detect the presence or absence of objects by detecting light energy. Phototransistors are one type of optical sensor, used to detect the presence or absence of light by monitoring changes in current. The SFH 3400-2/3-Z is one such product that is designed to be used in variety of applications, from detection of vehicle occupants to reflection control and display protective circuits. The SFH 3400-2/3-Z consists of two phototransistor components in one housing, that is both cost-effective and fits into tight spaces. The housing also contains two LEDs, that serves as light sources. The two LED sources ensure that the ambient light is far in excess of the recommended operating edge to maximise the sensitivity. It operates with a supply voltage between 4.5 and 24 volts and requires a single output line from a controller to generate the waveform. The detector can detect light from a variety of light sources, such as incandescent, fluorescent, particle, and acoustic fields, and is suitable for both indoor and outdoor applications. The SFH 3400-2/3-Z is primarily used as a safety aid or as an alarm system. It is designed to detect the presence of individuals or objects in a certain area and to trigger an alarm when necessary. It can be used in a variety of applications, such as in security systems, airbag deployment systems, and vehicle occupant detection. It is also used in intelligent lighting systems and automated energy management systems. The working principle of the SFH 3400-2/3-Z is based on the fact that when light is detected, the current rises and the voltage will drop. When the light is removed, the current and voltage will revert to their original values. The current and voltage can be detected by the controller and the alarm will be activated if the detected signal meets the required criteria. When the SFH 3400-2/3-Z is used for vehicle occupant detection, the light source is connected to a controller. The controller will then close the circuit between the two LEDs and the phototransistor. When the phototransistor detects an object or occupant within range, its current will rise and a signal will be sent to the controller. The controller will then activate the alarm if the signal meets the required criteria. This principle is also applicable in intelligent lighting and energy management systems, where changes in light intensity are used to control lighting or energy sources. The SFH 3400-2/3-Z is a versatile and cost-effective phototransistor that can be used in a variety of applications. With its wide operating range and the ability to detect a variety of light sources, it can be used in both indoor and outdoor systems. Its low power consumption and wide operating range makes it ideal for both industrial and consumer applications. Its precise and reliable output also makes it an excellent choice for safety and alarm systems.

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